References of "Geuzaine, Christophe"
     in
Bookmark and Share    
Peer Reviewed
See detailHigh-order stochastic integral equation scheme for wave scattering problems with random impedance boundary conditions
Geuzaine, Christophe ULg; Gaignaire, R.; Bruno, O.

in Proceedings of the IVth European Conference on Computational Mechanics (ECCM 2010) (2010)

Detailed reference viewed: 15 (7 ULg)
Peer Reviewed
See detailQuality meshing of medical geometries with harmonic maps
Marchandise, E.; Remacle, J.-F.; Geuzaine, Christophe ULg

in Proceedings of CMBBE 2010 (2010)

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailTransformation Optics, Generalized Cloaking and Superlenses
Nicolet, A.; Zolla, F.; Geuzaine, Christophe ULg

in IEEE Transactions on Magnetics (2010), 46

Detailed reference viewed: 42 (7 ULg)
Peer Reviewed
See detailHigh Quality Surface Remeshing Using Harmonic Maps. Surfaces with High Genus and of Large Aspect Ratio
Remacle, J.-F.; Geuzaine, Christophe ULg; Marchandise, E.

in 19th International Meshing Roundtable (2010)

Detailed reference viewed: 24 (1 ULg)
Full Text
See detailComputational Methods for Multiple Scattering at High Frequency with Applications to Periodic Structure Calculations
Antoine, X.; Geuzaine, Christophe ULg; Ramdani, K.

in Ehrhardt, M. (Ed.) Wave Propagation in Periodic Media - Analysis, Numerical Techniques and practical Applications (2010)

Detailed reference viewed: 98 (16 ULg)
Full Text
Peer Reviewed
See detailHigh-Quality Surface Remeshing Using Harmonic Maps
Remacle, J.-F.; Geuzaine, Christophe ULg; Compère, G. et al

in International Journal for Numerical Methods in Engineering (2010), 83(4), 403-425

Detailed reference viewed: 59 (3 ULg)
Full Text
See detailAdaptive Mesh Generation and Visualisation
Remacle, J.-F.; Geuzaine, Christophe ULg; Compère, J. et al

in Blockley, Richard; Shyy, Wei (Eds.) Encyclopedia of Aerospace Engineering (2010)

Detailed reference viewed: 286 (31 ULg)
Full Text
Peer Reviewed
See detailQuality meshing based on STL triangulations for biomedical simulations
Marchandise, E.; Compère, G.; Willemet, M. et al

in International Journal for Numerical Methods in Biomedical Engineering (2010), 26(7), 876-889

Detailed reference viewed: 33 (5 ULg)
Full Text
Peer Reviewed
See detailSurface-Impedance Boundary Conditions in Dual Time-Domain Finite-Element Formulations
V Sabariego, Ruth ULg; Dular, Patrick ULg; Geuzaine, Christophe ULg et al

in Proceedings of the 17th Conference on the Computation of Electromagnetic Fields, COMPUMAG 2009 (2009, November)

This paper deals with time-domain surface-impedance boundary conditions in computational magnetodynamics considering both magnetic-vector potential and magnetic-field formulation. Based on the resolution ... [more ▼]

This paper deals with time-domain surface-impedance boundary conditions in computational magnetodynamics considering both magnetic-vector potential and magnetic-field formulation. Based on the resolution of the 1-D eddy-current problem in a semi-infinite slab, the massive conducting region is accounted for by choosing a number of exponentially decreasing trigonometric basis functions covering the relevant frequency range. Herein the method is elaborated for the magnetic-field formulation. Results for both formulations are compared and validated on a two-dimensional test case. [less ▲]

Detailed reference viewed: 8 (3 ULg)
Peer Reviewed
See detailSome issues related to unstructured mesh generation
Compère, G.; Remacle, J.-F.; Marchandise, E. et al

in Proceedings of Current and New Trends in Scientific Computing, CMM-DIM 2009 (2009, October)

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailThree beneficiaries of project-oriented education in power electronics
Plumier, Frédéric ULg; Geuzaine, Christophe ULg

in Three beneficiaries of project-oriented education in power electronics (2009, September)

Power Electronics education at the University of Liège exhibits a particular feature, in that a person from industry is directly involved in the teaching of the introductory Power Electronics course since ... [more ▼]

Power Electronics education at the University of Liège exhibits a particular feature, in that a person from industry is directly involved in the teaching of the introductory Power Electronics course since academic year 2007-2008. Together with him, we teach this subject making use of a project-oriented method. After two years of this experience, it is now of great interest to analyze the main benefits of this method for the students, the teaching team at the University and the company involved in the teaching process. In this paper we present through an example the method that is being used. We mention some interesting technical problems encountered by the students during their project work. We also present the evolution of the method from the first year of application in 2007-2008 to the forthcoming third year in 2009-2010. [less ▲]

Detailed reference viewed: 105 (22 ULg)
See detailGmsh
Geuzaine, Christophe ULg; Remacle, J.-F.

Scientific conference (2009, June 09)

Detailed reference viewed: 29 (0 ULg)
Full Text
Peer Reviewed
See detailNumerical simulation of the magnetization of high-temperature superconductors: a 3D finite element method using a single time-step iteration
Lousberg, Grégory ULg; Ausloos, Marcel ULg; Geuzaine, Christophe ULg et al

in Superconductor Science and Technology (2009), 22

In this paper, we report progress towards a 3D finite element model for the magnetization of a high-temperature superconductor (HTS): we suggest a method that takes into account a power law conductivity ... [more ▼]

In this paper, we report progress towards a 3D finite element model for the magnetization of a high-temperature superconductor (HTS): we suggest a method that takes into account a power law conductivity and demagnetization effects, while neglecting the effects associated with currents that are not perpendicular to the local magnetic induction. We consider samples that are subjected to a uniform magnetic field varying linearly with time. Their magnetization is calculated by means of a weak formulation in the magnetostatic approximation of the Maxwell equations (A–φ formulation). An implicit method is used for the temporal resolution (backward Euler scheme) and is solved with the open source solver GetDP. Fixed point iterations are used to deal with the power law conductivity of HTS. The finite element formulation is validated for an HTS tube with large n value by comparing with results obtained with other well-established methods. We show that carrying out the calculations with a single time-step (as opposed to many small time-steps) produces results with excellent accuracy in a drastically reduced simulation time. The numerical method is extended to the study of the trapped magnetization of cylinders that are drilled with different arrays of columnar holes arranged parallel to the cylinder axis. [less ▲]

Detailed reference viewed: 145 (54 ULg)
See detailAdvances in Convergent High-Frequency Scattering Solvers
Geuzaine, Christophe ULg

Scientific conference (2009, April 02)

Detailed reference viewed: 3 (0 ULg)
Full Text
Peer Reviewed
See detailNonlinear time-domain finite-element modeling of thin electromagnetic shells
V Sabariego, Ruth ULg; Geuzaine, Christophe ULg; Dular, Patrick ULg et al

in IEEE Transactions on Magnetics (2009), 45(3), 976-979

A nonlinear time-domain extension of the classical linear frequency-domain thin-shell approach is presented. The interface conditions are expressed in terms of the average magnetic flux density throughout ... [more ▼]

A nonlinear time-domain extension of the classical linear frequency-domain thin-shell approach is presented. The interface conditions are expressed in terms of the average magnetic flux density throughout the shell thickness and a number of higher order components. The method is elaborated in the frame of the magnetic vector potential formulation. The nonlinear system of algebraic equations is solved by means of the Newton–Raphson scheme. To validate the new formulation, we consider a magnetic plate placed above a double line carrying a sinusoidal current. Results are compared with those obtained with a fine finite-element model. [less ▲]

Detailed reference viewed: 48 (8 ULg)
Full Text
Peer Reviewed
See detailSurface-impedance boundary conditions in time-domain finite-element calculations
Gyselinck, Johan; Geuzaine, Christophe ULg; Dular, Patrick ULg et al

in IEEE Transactions on Magnetics (2009), 45(3), 1280-1283

The authors propose a novel time-domain extension of the well-known frequency-domain surface-impedance method in computational magnetodynamics. Herein, the 1-D eddy-current problem in a massive conducting ... [more ▼]

The authors propose a novel time-domain extension of the well-known frequency-domain surface-impedance method in computational magnetodynamics. Herein, the 1-D eddy-current problem in a massive conducting region (semi-infinite slab) is considered via a number of exponentially decreasing trigonometric basis functions that cover the relevant skin-depth (or frequency) range of the application at hand. The method is elaborated for the 3-D magnetic-vector-potential formulation and is applied to a simple 2-D test case. Results are shown to converge well to those obtained with an accurate brute-force finite-element (FE) model. [less ▲]

Detailed reference viewed: 78 (6 ULg)
Peer Reviewed
See detailGeometry module for next-generation computational electromagnetics software
Geuzaine, Christophe ULg

in Proceedings of the 4th Advanced Computational Electromagnetics workshop (2009, January 13)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailFinite-Element Analysis of a Shielded Pulsed-Current Induction Heater-- Experimental Validation of a Time-Domain Thin-Shell Approach
V Sabariego, Ruth ULg; Sergeant, Peter; Gyselink, Johan et al

in Proceedings of the 8th International Symposium on Electric and Magnetic Fields (EMF2009) (2009)

A time-domain extension of the classical frequency-domain thin-shell approach is used for the finite-element analysis of a shielded pulse-current induction heater. The time-domain interface conditions at ... [more ▼]

A time-domain extension of the classical frequency-domain thin-shell approach is used for the finite-element analysis of a shielded pulse-current induction heater. The time-domain interface conditions at the shell surface are expressed in terms of the average (zero-order) instantaneous flux and current density vectors in the shell, as well as in terms of a limited number of higher-order components. The three-dimensional thin-shell model is validated by comparing the numerical results with measurements performed on the heating device at different working frequencies. [less ▲]

Detailed reference viewed: 40 (7 ULg)
Full Text
Peer Reviewed
See detailAnalysis of perforated magnetic shields for electric power applications
Sergeant, Peter; V Sabariego, Ruth ULg; Crevecoeur, Guillaume et al

in IET Electric Power Applications (2009), 3(2), 123-132

The shielding performance of perforated magnetic shields for electric power applications is described. The shielding of an axisymmetric induction heating device is studied as a function of frequency ... [more ▼]

The shielding performance of perforated magnetic shields for electric power applications is described. The shielding of an axisymmetric induction heating device is studied as a function of frequency, number of perforations and dimensions of the perforations. From the numerical point of view, the perforations cause the numerical model to be 3D. A numerical optimisation is carried out to find the optimal geometry with respect to the shielding factor and the volume of the shield. For the optimisation, two approaches are presented. The first approach is fast and easy-to-implement, but has limited accuracy. It uses a classical 2D axisymmetric model where the perforations are approximated by ‘axisymmetric air gaps’ resulting in a segmented shield. It is shown how to modify the 2D model to obtain results that are similar to the ones of a 3D model. The second approach is more accurate although quite fast, but more difficult to implement. It combines a 3D thin- shell finite element model with the unmodified 2D model in a space mapping optimisation algorithm. The validation of both models is based on experimental work for an unperforated shield and for the optimised perforated shield. [less ▲]

Detailed reference viewed: 53 (2 ULg)
Peer Reviewed
See detailIterative finite element solution of multiple-scattering problems at high frequencies
Geuzaine, Christophe ULg; Dular, Patrick ULg; Gaignaire, R. et al

in Proceedings of the 8th International Symposium on Electric and Magnetic Fields (EMF'2009) (2009)

Detailed reference viewed: 59 (10 ULg)